We are having a real hard time getting our stack trace deobfuscation to
work correctly.
Whenever we have an exception, our stack trace looks like this:
2013-05-13T20:43:36.998257+00:00 stg-cardit1 hermione: ERROR:Unhandled
> client exception[0]java.lang.RuntimeException: Crash
> 2013-05-13T20:43:36.998386+00:00 stg-cardit1 hermione: Caused by:
> 2013-05-13T20:43:36.998479+00:00 stg-cardit1 hermione: EXCEPTION:
> Crash(java.lang.RuntimeException)
> 2013-05-13T20:43:36.998567+00:00 stg-cardit1 hermione:
> Unknown.Pp(StackTraceCreator.java:174)
> 2013-05-13T20:43:36.998653+00:00 stg-cardit1 hermione:
> Unknown.qd(StackTraceCreator.java:508)
> 2013-05-13T20:43:36.998739+00:00 stg-cardit1 hermione:
> Unknown.td(Exception.java:29)
> 2013-05-13T20:43:36.998824+00:00 stg-cardit1 hermione:
> Unknown.wo(RuntimeException.java:29)
> 2013-05-13T20:43:36.998910+00:00 stg-cardit1 hermione:
> Unknown.Mid(CardServiceImpl.java:207)
> 2013-05-13T20:43:36.998996+00:00 stg-cardit1 hermione:
> Unknown.u4c(MasterActivity.java:404)
> 2013-05-13T20:43:36.999136+00:00 stg-cardit1 hermione:
> Unknown.m5c(MasterActivity.java:368)
> 2013-05-13T20:43:36.999241+00:00 stg-cardit1 hermione:
> Unknown.p5c(MasterActivity.java:367)
> 2013-05-13T20:43:36.999332+00:00 stg-cardit1 hermione:
> Unknown.Xjd(FlickrServiceImpl.java:79)
> 2013-05-13T20:43:36.999418+00:00 stg-cardit1 hermione:
> Unknown.dkd(FlickrServiceImpl.java:92)
> 2013-05-13T20:43:36.999503+00:00 stg-cardit1 hermione:
> Unknown.akd(FlickrServiceImpl.java:49)
> 2013-05-13T20:43:36.999588+00:00 stg-cardit1 hermione:
> Unknown.rBd(SevogleRequestBuilder.java:29)
> 2013-05-13T20:43:36.999673+00:00 stg-cardit1 hermione:
> Unknown.uE(Request.java:258)
> 2013-05-13T20:43:36.999797+00:00 stg-cardit1 hermione:
> Unknown.gF(RequestBuilder.java:412)
> 2013-05-13T20:43:36.999893+00:00 stg-cardit1 hermione:
> Unknown.anonymous(XMLHttpRequest.java:351)
> 2013-05-13T20:43:36.999980+00:00 stg-cardit1 hermione:
> Unknown.hp(Impl.java:189)
> 2013-05-13T20:43:37.000065+00:00 stg-cardit1 hermione:
> Unknown.kp(Impl.java:242)
> 2013-05-13T20:43:37.000150+00:00 stg-cardit1 hermione:
> Unknown.anonymous(Impl.java:70)
>
I have updated our gwt.xml file to have the following lines:
<!-- Stack track info -->
>
> <set-property name="compiler.stackMode" value="emulated" />
>
> <set-property name="compiler.useSourceMaps" value="true" />
>
> <set-configuration-property name=
> "compiler.emulatedStack.recordLineNumbers" value="true" />
>
> <set-configuration-property name="compiler.emulatedStack.recordFileNames"
> value="true" />
>
The first problem we ran into is that gwtc was creating the symbolmap file
with the name "null_symbolMap0.json"
We hand coded our ant build script to have it put the permuation name into
the file name
WEB-INF/symbolMaps/${permutation_name}_sourceMap0.json
>
I also tested it with
> WEB-INF/symbolMaps/${permutation_name}.sourceMap0.json
and this is then inside the .war file.
When we go to call this, we use the following commands
> getServletContext().getRealPath("/");
>
> StackTraceDeobfuscator deob =
> newStackTraceDeobfuscator(getServletContext().getRealPath(
> "/WEB-INF/symbolMaps"));
>
> StackTraceElement[] elements =
> deob.deobfuscateStackTrace(jsElements.toArray(new StackTraceElement[0]),
>
>
> gwtPermutationStrongName);
>
Where gwtPermutationStrongName is identical to the name in the file.
The json in the symbol map looks like this:
> {
> "version":3,
> "file":"sourceMap0",
> "lineCount":8439,
> "mappings":"A;AAwCA,aAAA,CAAA,CAAA......AA,IAAA;",
>
> "sources":["com/google/gwt/dev/jjs/intrinsic/com/google/gwt/lang/SeedUtil.java","com/google/gwt/emul/java/lang/Object.java",...
> ,"com/google/gwt/dev/jjs/intrinsic/com/google/gwt/lang/ClassLiteralHolder.java"],
> "names":[]
> }
Looking at the sourcemap, it appears that the "names" field is empty. But I'm
not sure what to do about that, since I've got the flags set above.
The build is happening in ANT, with the following
<property name="gwt.args" value="-localWorkers 8 -extra
> war/WEB-INF/classes/" />
> <java failonerror="true" fork="true" classname=
> "com.google.gwt.dev.Compiler">
> <classpath>
> <pathelement location="war/WEB-INF/classes/*.jar" />
> <pathelement location="war/WEB-INF/lib/*.jar" />
> <pathelement location="src" />
> <pathelement location="gen" />
> <path refid="project.class.path" />
> <pathelement location="${gwt.sdk}/validation-api-1.0.0.GA.jar" />
> <pathelement location="${gwt.sdk}/validation-api-1.0.0.GA-sources.jar" />
> </classpath>
> <!-- add jvmarg -Xss16M or similar if you see a StackOverflowError -->
> <jvmarg value="-Xmx2524M" />
> <!-- <arg line="-compileReport" />
> <arg line="-XsoycDetailed" /> -->
> <arg line="-war" />
> <arg value="war" />
> <!-- Additional arguments like -style PRETTY or -logLevel DEBUG -->
> <arg line="${gwt.args}" />
> <arg value="com.sevogle.hermione.Hermione" />
> </java>
I've seen some comments that if you have the closure compiler enable, that
the stack trace functionality doesn't work, but unless it's enable by
default, we don't have it enabled.
https://code.google.com/p/google-web-toolkit/issues/detail?id=7803
You can see the two files here:
https://www.dropbox.com/sh/h1bwe9e8jr2040x/RVlEdqrvHg
Thanks in advance for your time.
Adam
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